5
Knives and counter – knife
Observe to re – thighten screws by using the safety discs. The machine is equipped
with a simply exchangeable and reversable counter – knife in tapered execution. It
has two sharp edges. Used cutting edges may be re – welded by electrodes of 250 –
300 kg consistency and re – grinded for usable sharp edges. (Hardness approx. 60
HRC). Avoid from dirt when re – mounting the counter – knife, clean the surfaces
from dirt and chips.
Power requirements
Depending from material to be chopped at minimum 9 HP (6,6 KW)
Chopping lenth
Only hydraulic valve = approx. 20mm
Hydraulic capacity regulator = 5 up to 20mm (larger pieces on request).
Attention: Use only spare parts origine JENSEN. No warranty in case of using other
products. In case of spare part order always mention the number of this machine.
Technical Specifications for woodchippers
Maximum wood diameter: (depending on wood and engine)
A141 = 24cm A231 = 22cm
A328 = 16cm A325 = 16cm
A425 = 15cm A521 = 12cm
A518 = 10 cm A528 = 15cm
On heavy feed please watch the rpm of the chipper – disk!
In case the rpm drops you should diengage the hydraulic feed rollers and do not
engage again before the machine is back to the full rpm.
Necessary power: with 2 knife and mixed bushwork you need about 6.6 KW.
The power you really need depends on the sorting and the kind of the wood, the
speed of feed and the number of knifes in your machine.
Chipping – length: Using hydraulic feed rollers you can adjust the length between 0
and 5cm with the regulator (special order).
Caution! Knife – screws and all screw on the transportation – axle should be
controlled regularly and tightened following the table:
Forces for bolts and nuts class 8.8:
Size Nm kpm
M20 410 41
M16 210 21
M12 86 8,6
M10 49 4.9
M8 25 2,5
M6 10 1
¾“ 340 34
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